diff options
Diffstat (limited to 'src/3rdparty/libjpeg/src/jdapistd.c')
| -rw-r--r-- | src/3rdparty/libjpeg/src/jdapistd.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/src/3rdparty/libjpeg/src/jdapistd.c b/src/3rdparty/libjpeg/src/jdapistd.c index 695a620099..02cd0cb93a 100644 --- a/src/3rdparty/libjpeg/src/jdapistd.c +++ b/src/3rdparty/libjpeg/src/jdapistd.c @@ -4,7 +4,7 @@ * This file was part of the Independent JPEG Group's software: * Copyright (C) 1994-1996, Thomas G. Lane. * libjpeg-turbo Modifications: - * Copyright (C) 2010, 2015-2020, D. R. Commander. + * Copyright (C) 2010, 2015-2020, 2022, D. R. Commander. * Copyright (C) 2015, Google, Inc. * For conditions of distribution and use, see the accompanying README.ijg * file. @@ -159,8 +159,12 @@ jpeg_crop_scanline(j_decompress_ptr cinfo, JDIMENSION *xoffset, JDIMENSION input_xoffset; boolean reinit_upsampler = FALSE; jpeg_component_info *compptr; +#ifdef UPSAMPLE_MERGING_SUPPORTED + my_master_ptr master = (my_master_ptr)cinfo->master; +#endif - if (cinfo->global_state != DSTATE_SCANNING || cinfo->output_scanline != 0) + if ((cinfo->global_state != DSTATE_SCANNING && + cinfo->global_state != DSTATE_BUFIMAGE) || cinfo->output_scanline != 0) ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); if (!xoffset || !width) @@ -208,6 +212,13 @@ jpeg_crop_scanline(j_decompress_ptr cinfo, JDIMENSION *xoffset, */ *width = *width + input_xoffset - *xoffset; cinfo->output_width = *width; +#ifdef UPSAMPLE_MERGING_SUPPORTED + if (master->using_merged_upsample && cinfo->max_v_samp_factor == 2) { + my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample; + upsample->out_row_width = + cinfo->output_width * cinfo->out_color_components; + } +#endif /* Set the first and last iMCU columns that we must decompress. These values * will be used in single-scan decompressions. @@ -318,7 +329,9 @@ LOCAL(void) read_and_discard_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines) { JDIMENSION n; +#ifdef UPSAMPLE_MERGING_SUPPORTED my_master_ptr master = (my_master_ptr)cinfo->master; +#endif JSAMPLE dummy_sample[1] = { 0 }; JSAMPROW dummy_row = dummy_sample; JSAMPARRAY scanlines = NULL; @@ -342,10 +355,12 @@ read_and_discard_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines) cinfo->cquantize->color_quantize = noop_quantize; } +#ifdef UPSAMPLE_MERGING_SUPPORTED if (master->using_merged_upsample && cinfo->max_v_samp_factor == 2) { my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample; scanlines = &upsample->spare_row; } +#endif for (n = 0; n < num_lines; n++) jpeg_read_scanlines(cinfo, scanlines, 1); @@ -511,7 +526,7 @@ jpeg_skip_scanlines(j_decompress_ptr cinfo, JDIMENSION num_lines) * all of the entropy decoding occurs in jpeg_start_decompress(), assuming * that the input data source is non-suspending. This makes skipping easy. */ - if (cinfo->inputctl->has_multiple_scans) { + if (cinfo->inputctl->has_multiple_scans || cinfo->buffered_image) { if (cinfo->upsample->need_context_rows) { cinfo->output_scanline += lines_to_skip; cinfo->output_iMCU_row += lines_to_skip / lines_per_iMCU_row; |